#include<stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>

int main() 
{ 

#ifdef FILEIO
	freopen("in.txt","r",stdin); 
	freopen("out.txt","w",stdout); 
#endif



#ifdef FILEIO
	fclose(stdin);
	fclose(stdout);
#endif  

	return 0; 
}
